Urea [(NH2)2CO] is prepared by reacting ammonia with carbon dioxide                     2NH3 (g) + CO2 (g) ------> (NH2)2CO (aq) + H2O (l) In one process, 700 g of NH3 are treated with 1253 g of CO2. Which one is the limiting reactant? Calculate the mass of urea [(NH2)2CO] formed. How much excess reagent (in grams) is left at the end of the reaction?

Iodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous solution containing sodium iodine 2Nal(aq)+Cl2(g)---> I2(s)+2NaCl(aq)  How many grams of sodium iodide, NaI, must be used to produce 82.1 g of iodine, I2?

When heated, Fe(OH)3 decomposes into Fe2O3 and water, according to the following equation: 2 Fe(OH)3 (S) > Fe2O3 (s) + 3 H2O (g). If 24.24 g of Fe(OH)3 decomposes, and 13.56 g of Fe2O3 are obtained in the reaction, what is the percent yield of the reaction?

Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that had been diluted by mixing with table salt (sodium chloride). When 2.00 g of the mixture undergoes combustion, 3.97 g of CO₂ is produced. What is the mass percent of morphine in the mixture?

Chemical Reactions of Copper and Percent Yield 5. Molarity, abbreviated M, is defined as the concentration of a solution expressed as moles of solute per liter of solution. How many milliliters of 4.00 M H₂SO4 are required to react with 1.60 g of CuO according to Equation [4]? WEW Tradnost bes Ismos brit od 300 6. If 2.00 g of Zn is allowed to react with 2.00 g of CuSO4, according to Equation [5], how many grams of Zn will remain after the reaction is complete?

Consider the following chemical reaction: Al2O3  (s) + 6HCl(aq) ---------->2AlCl3(aq) + 3H2O(l)  How moles of AlCl3 are produced if 1.20 g of hydrochloric acid reacts with aluminum  oxide? HCl =36.45 g/mole

Iodine is prepared both in a lab and commercially by adding Cl2(g) to an aqueous solution containing sodium iodide.  how many grams of sodium iodide NaI must be used to produce 86 g of iodine I2?

Ethanol (C,H,O) is combusted in air according to the following reaction: 2 6 C,H,O(1) + O,(g) → CO,(g) + H,O(1) How many grams of water would be produced by the complete combustion of 6.45 moles of ethanol in the presence of excess oxygen?

A 0.732 g mixture of methane, CH4, and ethane, C2H6, is burned, yielding 2.063 g of CO2. What is the percentage by mass of CH4 in the mixture?